Results 91 to 100 of about 80,128 (213)

New High Speed PMSM Flux-Weakening Strategy

, 2017
High speed permanent magnet synchronous motor (PMSM) are increasingly used in the field of electric traction due to their high mass and power density. Usually the motor is piloted by a vector control associated with a flux-weakening algorithm which regulates the voltage norm.
Sepulchre, Leopold, Fadel, Maurice, Pietrzak-David, Maria, Porte, Guillaume   +3 more
openaire   +1 more source

DESIGN AND ANALYSIS OF VARIABLE LEAKAGE FLUX FLUX-INTENSIFYING MOTOR FOR IMPROVE FLUX-WEAKENING ABILITY [PDF]

Progress In Electromagnetics Research M, 2021
Xiping Liu, Gaosheng Guo, Siting Zhu, Jianwei Liang   +3 more
openaire   +1 more source

Flux-Weakening Control for IPMSM Employing Model Order Reduction

2018 XIII International Conference on Electrical Machines (ICEM), 2018
The variation of magnetic parameters due to the magnetic saturation and cross coupling can affect the efficiency and the stability of the control system in electrical machines, especially at high-speed operation. This paper presents an approach independent of the magnetic model parameters to control synchronous motors at the flux-weakening region.
Far, Mehrnaz Farzam, Mustafa, Bilal, Martin, Floran, Rasilo, Paavo, Belahcen, Anouar   +5 more
openaire   +4 more sources

Triggering an eruptive flare by emerging flux in a solar active-region complex

, 2015
A flare and fast coronal mass ejection originated between solar active regions NOAA 11514 and 11515 on July 1, 2012 in response to flux emergence in front of the leading sunspot of the trailing region 11515.
A.A. Ballegooijen van, A.C. Sterling, A.S. Savcheva, B. Kliem, B.C. Low, B.J. Lynch, B.W. Lites, C.J. Schrijver, D.H. Mackay, D.H. Mackay, D.M. Rust, G. Aulanier, G. Aulanier, G. Roumeliotis, H. Li, H. Wang, J. Feynman, J. Lin, J. Lin, J. Schou, J. Wang, J. Zhang, J.E. Leake, J.R. Lemen, J.T. Karpen, J.W. Harvey, J.W. Harvey, K. Kusano, L.M. Green, M.-J. Martres, M.J. Hagyard, O. Burtseva, P. Démoulin, P.F. Chen, P.W. Schuck, R.A. Howard, R.E. Louis, S.E. Gibson, S.F. Martin, S.F. Martin, S.H.B. Livi, T. Amari, T. Amari, T. Amari, T. Kaneko, T. Sakajiri, T. Török, T.G. Forbes, V. Archontis, V. Archontis, V. Archontis, V.S. Titov, W. Manchester IV, W. Tend van, W.D. Pesnell, X. Sun, X. Zhao, X.-Y. Xu, X.-Y. Xu, Y.-M. Wang, Z. Mikic   +60 more
core   +1 more source

Weakening and Shifting of the Saharan Shallow Meridional Circulation During Wet Years of the West African Monsoon

, 2017
The correlation between increased Sahel rainfall and reduced Saharan surface pressure is well established in observations and global climate models, and has been used to imply that increased Sahel rainfall is caused by a stronger shallow meridional ...
Boos, William R., Shekhar, Ravi
core   +1 more source

Research of Permanent Magnet Synchronous Motor Control Stability Improving in Depth Flux-weakening Area

机车电传动, 2015
Stability problem of PMSM current vector control in depth flux-weakening area was analyzed, and a new flux-weakening control scheme in the MTPV of PMSM was proposed, which significantly improved stability and increased speed range while maintaining ...
SHI Min, FENG Jiang-hua, XU Junfeng, HE Yaping, XIAO Lei, WEN Yuliang   +5 more
doaj  

Voltage Difference-Based Field-Weakening Control of Double-Rotor Hybrid Excitation Axial Flux Switching Permanent Magnet Motor [PDF]

Iranian Journal of Electrical and Electronic Engineering
This paper investigates the operational performance of a novel Double-Rotor Hybrid Excitation Axial Flux Switching Permanent Magnet (DRHE-AFSPM) machine, combining the strengths of Flux-Switching Machines and Hybrid Excitation Synchronous Machines.
Mehrdad Kamali, Behrooz Rezaeealam, Farhad Rezaee-Alam   +2 more
doaj  

Solar Fe abundance and magnetic fields - Towards a consistent reference metallicity

, 2012
We investigate the impact on Fe abundance determination of including magnetic flux in series of 3D radiation-MHD simulations of solar convection which we used to synthesize spectral intensity profiles corresponding to disc centre. A differential approach
Fabbian, D., Khomenko, E., Moreno-Insertis, F., Nordlund, Å.   +3 more
core   +1 more source

Even denominator fractional quantum Hall states at an isospin transition in monolayer graphene

, 2017
Magnetic fields quench the kinetic energy of two dimensional electrons, confining them to highly degenerate Landau levels. In the absence of disorder, the ground state at partial Landau level filling is determined only by Coulomb interactions, leading to
Kometter, C., Spanton, E. M., Taniguchi, T., Watanabe, K., Young, A. F., Zhou, H., Zibrov, A. A.   +6 more
core   +1 more source

A Two-State Linear Flux Weakening Strategy for an Operation Region Extension of the Variable-Flux Memory Machine

World Electric Vehicle Journal
The variable-flux memory machine (VFMM) can perform flexible online PM flux adjustment by utilizing a magnetizing current pulse, effectively extending the machine operation range.
Chuanjin Liu, Xing Liu, Chenggang Wang, Hui Yang, Lei Huang   +4 more
doaj   +1 more source